qemu-options: define -spice only #ifdef CONFIG_SPICE

Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=1982600

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

qemu-options.hx

@@ -2097,6 +2097,7 @@ SRST
     Enable SDL.
 ERST
 
+#ifdef CONFIG_SPICE
 DEF("spice", HAS_ARG, QEMU_OPTION_spice,
     "-spice [port=port][,tls-port=secured-port][,x509-dir=<dir>]\n"
     "       [,x509-key-file=<file>][,x509-key-password=<file>]\n"
@@ -2118,6 +2119,7 @@ DEF("spice", HAS_ARG, QEMU_OPTION_spice,
     "   enable spice\n"
     "   at least one of {port, tls-port} is mandatory\n",
     QEMU_ARCH_ALL)
+#endif
 SRST
 ``-spice option[,option[,...]]``
     Enable the spice remote desktop protocol. Valid options are

softmmu/vl.c

@@ -3537,6 +3537,7 @@ void qemu_init(int argc, char **argv, char **envp)
             case QEMU_OPTION_readconfig:
                 qemu_read_config_file(optarg, qemu_parse_config_group, &error_fatal);
                 break;
+#ifdef CONFIG_SPICE
             case QEMU_OPTION_spice:
                 olist = qemu_find_opts_err("spice", NULL);
                 if (!olist) {
@@ -3549,6 +3550,7 @@ void qemu_init(int argc, char **argv, char **envp)
                 }
                 display_remote++;
                 break;
+#endif
             case QEMU_OPTION_writeconfig:
                 {
                     FILE *fp;